Stroller frame



FIG. 1 is a perspective view of the stroller frame.

FIG. 2 is a front elevational view of FIG. 1

FIG. 3 is a rear elevational view of FIG. 1 .

FIG. 4 is a top plan view of FIG. 1 .

FIG. 5 is a bottom plan view of FIG. 1 .

FIG. 6 is a left side elevational view of FIG. 1 .

FIG. 7 is a right side elevational view of FIG. 1 ; and,

FIG. 8 is a reference view showing the use state of the stroller frame connected with a seat.

The broken lines depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a stroller frame, as shown and described. 